AWS

This quick terraform project sets up an EC2 instance, configures wireguard, generates the required keys (including a PSK) and provides the wireguard “Client” configuration. The code can be found here WARNING: Cloud network egress/throughput will incur costs which can vary from region to region. Purpose This terraform code (and associated template file containing a bash script) will create an EC2 instance which is running wireguard and can be used as a VPN endpoint....

In this post, I will go over the steps needed to provision a Kubernetes cluster in AWS, and deploy a Neo4j cluster using Neo4j’s helm charts. This post takes steps from the official Neo4j Kubernetes Documentation Prerequisites An AWS Account Configured AWS Command Line Interface An SSH Key named id_rsa.pub. If you do not have one, you can generate it by running: ssh-keygen -t rsa -C "[email protected]" Setting up a Kubernetes Cluster in EKS Installation of tools and applications In order to create a Kubernetes (EKS) cluster in AWS, you will need to download the following applications: kubectl...

My post on the neo4j blog explains how to get up and running with Neo4j using the AWS partner solution. AWS Partner Solutions (formerly known as AWS Quick Start) are pre-configured reference deployments that work seamlessly with Amazon Web Services (AWS) and follow AWS’s recommended design practices. They provide customers with a variety of deployment options for managing their workloads on AWS. Neo4j’s AWS Partner Solution for AWS is a quick and easy way to deploy a fully-managed Neo4j cluster on the AWS platform....

Recently, I had to re-visit an old architectural challenge in AWS that I came across a couple of years ago but couldn’t quite remember how to resolve: EC2 instances which have no public IP address (residing in a private subnet) which can accept requests from (and serve responses back to) the internet. The motivation for this particular topology is security focused: The EC2 instances cannot be directly addressed via the internet due to the absence of a public IP, but can serve (web, in this example) content over the internet using the load balancer....

In this post, I outline the steps needed to take an input from a terraform parent (or calling) module and pass it to a config file on a target EC2 instance. What are Terraform Modules? Using modules in terraform helps to organise and reuse code, allowing a module to be defined once and used many times. For example, a development team may want to quickly create and destroy a number of EC2 instances....

The following code snippets show how to create three private subnets in AWS using terraform with ‘count’, ‘join’ and ’element’: To start with the following variables were declared and set: terraform.tfvars base_cidr_block = "192.168.0.0/16" node_count = 3 availability_zones = ["a", "b", "c"] variables.tf variable "base_cidr_block" { description = "The base of the address range to be used by the VPC and corresponding Subnets" } variable "availability_zones" { description = "A list containing 3 AZs" type = list(string) } variable "node_count" { description = "The number of ec2 instances to deploy" type = number } Three subnets are then created using a single resource block....